<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
	private  $_id;
	/**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */
	public function authenticate()  
    {  
        //ucenter  
        Yii::import('application.vendors.*');  
        include_once 'ucenter.php';  
        if(!empty($this->password))
        	list($uid, $username, $password, $email) = uc_user_login($this->username, $this->password);  
        else 
        	list($uid,$username,$email) = uc_get_user($this->username);
        
        setcookie('Example_auth','',-86400);
        if($uid > 0)  
        {  
            $this->_id=$uid;
            $this->username=$username;
            $this->errorCode=self::ERROR_NONE;
        	
        }  
        elseif($uid == -1)  
        {  
            $this->errorCode=self::ERROR_USERNAME_INVALID;  
        }  
        elseif($uid == -2)  
        {  
            $this->errorCode=self::ERROR_PASSWORD_INVALID;  
        }
        else 
        {
        	$this->errorCode==self::ERROR_NONE;
        }  
          
        return $this->errorCode==self::ERROR_NONE;  
    }  
      
    public function getId()  
    {  
        return $this->_id;  
    }  
}